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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Trait implemented by callsites."><title>Callsite in tracing_core - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../static.files/rustdoc-ac92e1bbe349e143.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" data-current-crate="tracing_core" data-themes="" data-resource-suffix="" data-rustdoc-version="1.76.0 (07dca489a 2024-02-04)" data-channel="1.76.0" data-search-js="search-2b6ce74ff89ae146.js" data-settings-js="settings-4313503d2e1961c2.js" ><script src="../static.files/storage-f2adc0d6ca4d09fb.js"></script><script defer src="sidebar-items.js"></script><script defer src="../static.files/main-305769736d49e732.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-feafe1bb7466e4bd.css"></noscript><link rel="alternate icon" type="image/png" href="../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc trait"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle">☰</button><a class="logo-container" href="../tracing_core/index.html"><img src="https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png" alt=""></a></nav><nav class="sidebar"><div class="sidebar-crate"><a class="logo-container" href="../tracing_core/index.html"><img src="https://raw.githubusercontent.com/tokio-rs/tracing/master/assets/logo-type.png" alt="logo"></a><h2><a href="../tracing_core/index.html">tracing_core</a><span class="version">0.1.32</span></h2></div><h2 class="location"><a href="#">Callsite</a></h2><div class="sidebar-elems"><section><h3><a href="#required-methods">Required Methods</a></h3><ul class="block"><li><a href="#tymethod.metadata">metadata</a></li><li><a href="#tymethod.set_interest">set_interest</a></li></ul><h3><a href="#implementors">Implementors</a></h3></section><h2><a href="index.html">In crate tracing_core</a></h2></div></nav><div class="sidebar-resizer"></div>
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<main><div class="width-limiter"><nav class="sub"><form class="search-form"><span></span><div id="sidebar-button" tabindex="-1"><a href="../tracing_core/all.html" title="show sidebar"></a></div><input class="search-input" name="search" aria-label="Run search in the documentation" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" tabindex="-1"><a href="../help.html" title="help">?</a></div><div id="settings-menu" tabindex="-1"><a href="../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1>Trait <a href="index.html">tracing_core</a>::<wbr><a class="trait" href="#">Callsite</a><button id="copy-path" title="Copy item path to clipboard"><img src="../static.files/clipboard-7571035ce49a181d.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="src" href="../src/tracing_core/callsite.rs.html#126-171">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>−</span>]</button></span></div><pre class="rust item-decl"><code>pub trait Callsite: <a class="trait" href="https://doc.rust-lang.org/1.76.0/core/marker/trait.Sync.html" title="trait core::marker::Sync">Sync</a> {
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// Required methods
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fn <a href="#tymethod.set_interest" class="fn">set_interest</a>(&self, interest: <a class="struct" href="subscriber/struct.Interest.html" title="struct tracing_core::subscriber::Interest">Interest</a>);
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<span class="item-spacer"></span> fn <a href="#tymethod.metadata" class="fn">metadata</a>(&self) -> &<a class="struct" href="struct.Metadata.html" title="struct tracing_core::Metadata">Metadata</a><'_>;
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}</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Trait implemented by callsites.</p>
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<p>These functions are only intended to be called by the callsite registry, which
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correctly handles determining the common interest between all subscribers.</p>
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<p>See the <a href="callsite/index.html" title="mod tracing_core::callsite">module-level documentation</a> for details on
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callsites.</p>
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</div></details><h2 id="required-methods" class="section-header">Required Methods<a href="#required-methods" class="anchor">§</a></h2><div class="methods"><details class="toggle method-toggle" open><summary><section id="tymethod.set_interest" class="method"><a class="src rightside" href="../src/tracing_core/callsite.rs.html#134">source</a><h4 class="code-header">fn <a href="#tymethod.set_interest" class="fn">set_interest</a>(&self, interest: <a class="struct" href="subscriber/struct.Interest.html" title="struct tracing_core::subscriber::Interest">Interest</a>)</h4></section></summary><div class="docblock"><p>Sets the <a href="subscriber/struct.Interest.html" title="struct tracing_core::subscriber::Interest"><code>Interest</code></a> for this callsite.</p>
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<p>See the <a href="callsite/index.html#performing-static-filtering" title="mod tracing_core::callsite">documentation on callsite interest caching</a> for
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details.</p>
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</div></details><details class="toggle method-toggle" open><summary><section id="tymethod.metadata" class="method"><a class="src rightside" href="../src/tracing_core/callsite.rs.html#148">source</a><h4 class="code-header">fn <a href="#tymethod.metadata" class="fn">metadata</a>(&self) -> &<a class="struct" href="struct.Metadata.html" title="struct tracing_core::Metadata">Metadata</a><'_></h4></section></summary><div class="docblock"><p>Returns the <a href="struct.Metadata.html" title="struct tracing_core::Metadata">metadata</a> associated with the callsite.</p>
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<div class="example-wrap" style="display:inline-block">
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<pre class="ignore" style="white-space:normal;font:inherit;">
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<p><strong>Note:</strong> Implementations of this method should not produce <a href="struct.Metadata.html" title="struct tracing_core::Metadata"><code>Metadata</code></a>
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that share the same callsite <a href="callsite/struct.Identifier.html" title="struct tracing_core::callsite::Identifier"><code>Identifier</code></a> but otherwise differ in any
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way (e.g., have different <code>name</code>s).</p>
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<p></pre></div></p>
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</div></details></div><h2 id="implementors" class="section-header">Implementors<a href="#implementors" class="anchor">§</a></h2><div id="implementors-list"><section id="impl-Callsite-for-DefaultCallsite" class="impl"><a class="src rightside" href="../src/tracing_core/callsite.rs.html#359-373">source</a><a href="#impl-Callsite-for-DefaultCallsite" class="anchor">§</a><h3 class="code-header">impl <a class="trait" href="trait.Callsite.html" title="trait tracing_core::Callsite">Callsite</a> for <a class="struct" href="callsite/struct.DefaultCallsite.html" title="struct tracing_core::callsite::DefaultCallsite">DefaultCallsite</a></h3></section></div><script src="../trait.impl/tracing_core/callsite/trait.Callsite.js" async></script></section></div></main></body></html> |